ANKARA, TURKEY – MARCH 09: President of Turkey Recep Tayyip Erdogan (R) and Ukrainian President Petro Poroshenko (L) exchange agreement files during the agreement signing ceremony after they attend the 5th Turkey-Ukraine High Level Strategic Council Meeting with their delegations at Presidential Complex in Ankara, Turkey on March 09, 2016. (Photo by Kayhan Ozer/Anadolu Agency/Getty Images)
